CVE-2020-21490 json
An issue was discovered in GNU Binutils 2.34.
published 2023-08-22 3 y ago modified 2026-06-17 4 mo ago also EUVD-2020-14260
- cvss
- 5.5
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 25%
- public exploits
- 0
- none known
Summary
An issue was discovered in GNU Binutils 2.34. It is a memory leak when process microblaze-dis.c. This one will consume memory on each insn disassembled.
Patch / fix
- gnu binutils 2.34
- binutils Debian 14, Debian 13, Debian 12 2.33.50.20200107-1
debian advisories DEBIAN-CVE-2020-21490
- binutils Ubuntu Pro 14.04 LTS 2.24-5ubuntu14.2+esm3
- binutils Ubuntu Pro 16.04 LTS 2.26.1-1ubuntu1~16.04.8+esm7
- binutils Ubuntu Pro 18.04 LTS 2.30-21ubuntu1~18.04.9+esm1
ubuntu advisories UBUNTU-CVE-2020-21490
Ubuntu security data © Canonical Ltd., from https://github.com/canonical/ubuntu-security-notices via OSV; changed: normalised to fixed package versions per release. CC BY-SA 4.0
Vendor advisories
What the vendors themselves say about their products: affected, fixed or not affected, and what to do.
red hat product security vex CVE-2020-21490 updated
binutils: memory leak in get_field() in microblaze-dis.c
-
Red Hat Enterprise Linux 6 binutils Red Hat Enterprise Linux 7 gdb, binutils, gdb-gdbserver Red Hat Enterprise Linux 8 gdb, binutils, gdb-headless, gdb-gdbserver, mingw-binutils, mingw32-binutils, +11 more Red Hat Enterprise Linux 9 gdb, binutils, gdb-minimal, gdb-headless, binutils-gold, gdb-gdbserver, +10 morenot affected: vulnerable code not present
Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.33% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- sourceware.org https://sourceware.org/bugzilla/show_bug.cgi?id=25249 referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 5.5 | CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H |
Classification
- Weakness
-
- CWE-401 Missing Release of Memory after Effective Lifetime
References
-
sourceware.org
/bugzilla/show_bug.cgi?id=25249
exploit, issue-tracking, third-party-advisory
- sourceware.org /git/gitweb.cgi?p=binutils-gdb.git%3Bh=378fd436405b3051df34ac995b2e03fe1f3d1907
- security.netapp.com /advisory/ntap-20230929-0007/
Sources
- CVE List CVE-2020-21490
- NVD CVE-2020-21490
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.